![Nathan Scott](/assets/img/avatar_default.png)
SGI-PV: 937127 SGI-Modid: xfs-linux:xfs-kern:24201a Signed-off-by: Nathan Scott <nathans@sgi.com>
574 lines
22 KiB
C
574 lines
22 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_MOUNT_H__
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#define __XFS_MOUNT_H__
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typedef struct xfs_trans_reservations {
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uint tr_write; /* extent alloc trans */
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uint tr_itruncate; /* truncate trans */
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uint tr_rename; /* rename trans */
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uint tr_link; /* link trans */
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uint tr_remove; /* unlink trans */
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uint tr_symlink; /* symlink trans */
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uint tr_create; /* create trans */
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uint tr_mkdir; /* mkdir trans */
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uint tr_ifree; /* inode free trans */
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uint tr_ichange; /* inode update trans */
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uint tr_growdata; /* fs data section grow trans */
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uint tr_swrite; /* sync write inode trans */
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uint tr_addafork; /* cvt inode to attributed trans */
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uint tr_writeid; /* write setuid/setgid file */
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uint tr_attrinval; /* attr fork buffer invalidation */
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uint tr_attrset; /* set/create an attribute */
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uint tr_attrrm; /* remove an attribute */
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uint tr_clearagi; /* clear bad agi unlinked ino bucket */
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uint tr_growrtalloc; /* grow realtime allocations */
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uint tr_growrtzero; /* grow realtime zeroing */
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uint tr_growrtfree; /* grow realtime freeing */
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} xfs_trans_reservations_t;
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#ifndef __KERNEL__
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/*
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* Moved here from xfs_ag.h to avoid reordering header files
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*/
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#define XFS_DADDR_TO_AGNO(mp,d) \
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((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
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#define XFS_DADDR_TO_AGBNO(mp,d) \
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((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
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#else
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struct cred;
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struct log;
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struct vfs;
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struct vnode;
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struct xfs_mount_args;
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struct xfs_ihash;
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struct xfs_chash;
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struct xfs_inode;
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struct xfs_perag;
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struct xfs_iocore;
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struct xfs_bmbt_irec;
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struct xfs_bmap_free;
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extern struct vfsops xfs_vfsops;
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extern struct vnodeops xfs_vnodeops;
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#define AIL_LOCK_T lock_t
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#define AIL_LOCKINIT(x,y) spinlock_init(x,y)
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#define AIL_LOCK_DESTROY(x) spinlock_destroy(x)
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#define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock)
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#define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s)
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/*
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* Prototypes and functions for the Data Migration subsystem.
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*/
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typedef int (*xfs_send_data_t)(int, struct vnode *,
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xfs_off_t, size_t, int, vrwlock_t *);
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typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint);
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typedef int (*xfs_send_destroy_t)(struct vnode *, dm_right_t);
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typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *,
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struct vnode *,
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dm_right_t, struct vnode *, dm_right_t,
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char *, char *, mode_t, int, int);
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typedef void (*xfs_send_unmount_t)(struct vfs *, struct vnode *,
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dm_right_t, mode_t, int, int);
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typedef struct xfs_dmops {
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xfs_send_data_t xfs_send_data;
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xfs_send_mmap_t xfs_send_mmap;
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xfs_send_destroy_t xfs_send_destroy;
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xfs_send_namesp_t xfs_send_namesp;
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xfs_send_unmount_t xfs_send_unmount;
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} xfs_dmops_t;
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#define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \
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(*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock)
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#define XFS_SEND_MMAP(mp, vma,fl) \
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(*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl)
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#define XFS_SEND_DESTROY(mp, vp,right) \
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(*(mp)->m_dm_ops.xfs_send_destroy)(vp,right)
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#define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
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(*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl)
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#define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \
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(*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl)
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#define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \
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(*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl)
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/*
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* Prototypes and functions for the Quota Management subsystem.
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*/
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struct xfs_dquot;
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struct xfs_dqtrxops;
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struct xfs_quotainfo;
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typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *);
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typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int);
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typedef int (*xfs_qmunmount_t)(struct xfs_mount *);
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typedef void (*xfs_qmdone_t)(struct xfs_mount *);
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typedef void (*xfs_dqrele_t)(struct xfs_dquot *);
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typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint);
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typedef void (*xfs_dqdetach_t)(struct xfs_inode *);
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typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint);
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typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *,
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struct xfs_inode *, uid_t, gid_t, prid_t, uint,
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struct xfs_dquot **, struct xfs_dquot **);
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typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot *, struct xfs_dquot *);
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typedef int (*xfs_dqvoprename_t)(struct xfs_inode **);
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typedef struct xfs_dquot * (*xfs_dqvopchown_t)(
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struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot **, struct xfs_dquot *);
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typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *,
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struct xfs_dquot *, struct xfs_dquot *, uint);
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typedef struct xfs_qmops {
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xfs_qminit_t xfs_qminit;
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xfs_qmdone_t xfs_qmdone;
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xfs_qmmount_t xfs_qmmount;
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xfs_qmunmount_t xfs_qmunmount;
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xfs_dqrele_t xfs_dqrele;
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xfs_dqattach_t xfs_dqattach;
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xfs_dqdetach_t xfs_dqdetach;
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xfs_dqpurgeall_t xfs_dqpurgeall;
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xfs_dqvopalloc_t xfs_dqvopalloc;
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xfs_dqvopcreate_t xfs_dqvopcreate;
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xfs_dqvoprename_t xfs_dqvoprename;
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xfs_dqvopchown_t xfs_dqvopchown;
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xfs_dqvopchownresv_t xfs_dqvopchownresv;
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struct xfs_dqtrxops *xfs_dqtrxops;
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} xfs_qmops_t;
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#define XFS_QM_INIT(mp, mnt, fl) \
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(*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl)
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#define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \
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(*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags)
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#define XFS_QM_UNMOUNT(mp) \
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(*(mp)->m_qm_ops.xfs_qmunmount)(mp)
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#define XFS_QM_DONE(mp) \
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(*(mp)->m_qm_ops.xfs_qmdone)(mp)
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#define XFS_QM_DQRELE(mp, dq) \
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(*(mp)->m_qm_ops.xfs_dqrele)(dq)
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#define XFS_QM_DQATTACH(mp, ip, fl) \
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(*(mp)->m_qm_ops.xfs_dqattach)(ip, fl)
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#define XFS_QM_DQDETACH(mp, ip) \
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(*(mp)->m_qm_ops.xfs_dqdetach)(ip)
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#define XFS_QM_DQPURGEALL(mp, fl) \
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(*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl)
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#define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \
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(*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2)
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#define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \
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(*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2)
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#define XFS_QM_DQVOPRENAME(mp, ip) \
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(*(mp)->m_qm_ops.xfs_dqvoprename)(ip)
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#define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \
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(*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq)
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#define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \
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(*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl)
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/*
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* Prototypes and functions for I/O core modularization.
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*/
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typedef int (*xfs_ioinit_t)(struct vfs *,
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struct xfs_mount_args *, int);
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typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *,
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xfs_fileoff_t, xfs_filblks_t, int,
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xfs_fsblock_t *, xfs_extlen_t,
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struct xfs_bmbt_irec *, int *,
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struct xfs_bmap_free *);
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typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
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typedef int (*xfs_iomap_write_direct_t)(
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void *, xfs_off_t, size_t, int,
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struct xfs_bmbt_irec *, int *, int);
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typedef int (*xfs_iomap_write_delay_t)(
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void *, xfs_off_t, size_t, int,
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struct xfs_bmbt_irec *, int *);
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typedef int (*xfs_iomap_write_allocate_t)(
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void *, xfs_off_t, size_t,
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struct xfs_bmbt_irec *, int *);
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typedef int (*xfs_iomap_write_unwritten_t)(
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void *, xfs_off_t, size_t);
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typedef uint (*xfs_lck_map_shared_t)(void *);
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typedef void (*xfs_lock_t)(void *, uint);
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typedef void (*xfs_lock_demote_t)(void *, uint);
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typedef int (*xfs_lock_nowait_t)(void *, uint);
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typedef void (*xfs_unlk_t)(void *, unsigned int);
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typedef xfs_fsize_t (*xfs_size_t)(void *);
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typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *);
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typedef struct xfs_ioops {
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xfs_ioinit_t xfs_ioinit;
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xfs_bmapi_t xfs_bmapi_func;
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xfs_bmap_eof_t xfs_bmap_eof_func;
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xfs_iomap_write_direct_t xfs_iomap_write_direct;
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xfs_iomap_write_delay_t xfs_iomap_write_delay;
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xfs_iomap_write_allocate_t xfs_iomap_write_allocate;
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xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten;
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xfs_lock_t xfs_ilock;
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xfs_lck_map_shared_t xfs_lck_map_shared;
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xfs_lock_demote_t xfs_ilock_demote;
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xfs_lock_nowait_t xfs_ilock_nowait;
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xfs_unlk_t xfs_unlock;
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xfs_size_t xfs_size_func;
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xfs_iodone_t xfs_iodone;
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} xfs_ioops_t;
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#define XFS_IOINIT(vfsp, args, flags) \
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(*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags)
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#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \
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(*(mp)->m_io_ops.xfs_bmapi_func) \
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(trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist)
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#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
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(*(mp)->m_io_ops.xfs_bmap_eof_func) \
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((io)->io_obj, endoff, whichfork, eof)
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#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\
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(*(mp)->m_io_ops.xfs_iomap_write_direct) \
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((io)->io_obj, offset, count, flags, mval, nmap, found)
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#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
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(*(mp)->m_io_ops.xfs_iomap_write_delay) \
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((io)->io_obj, offset, count, flags, mval, nmap)
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#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
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(*(mp)->m_io_ops.xfs_iomap_write_allocate) \
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((io)->io_obj, offset, count, mval, nmap)
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#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
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(*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
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((io)->io_obj, offset, count)
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#define XFS_LCK_MAP_SHARED(mp, io) \
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(*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
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#define XFS_ILOCK(mp, io, mode) \
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(*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
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#define XFS_ILOCK_NOWAIT(mp, io, mode) \
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(*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
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#define XFS_IUNLOCK(mp, io, mode) \
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(*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
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#define XFS_ILOCK_DEMOTE(mp, io, mode) \
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(*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
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#define XFS_SIZE(mp, io) \
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(*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
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#define XFS_IODONE(vfsp) \
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(*(mp)->m_io_ops.xfs_iodone)(vfsp)
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typedef struct xfs_mount {
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bhv_desc_t m_bhv; /* vfs xfs behavior */
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xfs_tid_t m_tid; /* next unused tid for fs */
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AIL_LOCK_T m_ail_lock; /* fs AIL mutex */
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xfs_ail_entry_t m_ail; /* fs active log item list */
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uint m_ail_gen; /* fs AIL generation count */
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xfs_sb_t m_sb; /* copy of fs superblock */
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lock_t m_sb_lock; /* sb counter mutex */
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struct xfs_buf *m_sb_bp; /* buffer for superblock */
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char *m_fsname; /* filesystem name */
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int m_fsname_len; /* strlen of fs name */
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char *m_rtname; /* realtime device name */
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char *m_logname; /* external log device name */
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int m_bsize; /* fs logical block size */
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xfs_agnumber_t m_agfrotor; /* last ag where space found */
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xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
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lock_t m_agirotor_lock;/* .. and lock protecting it */
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xfs_agnumber_t m_maxagi; /* highest inode alloc group */
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uint m_ihsize; /* size of next field */
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struct xfs_ihash *m_ihash; /* fs private inode hash table*/
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struct xfs_inode *m_inodes; /* active inode list */
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struct list_head m_del_inodes; /* inodes to reclaim */
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mutex_t m_ilock; /* inode list mutex */
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uint m_ireclaims; /* count of calls to reclaim*/
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uint m_readio_log; /* min read size log bytes */
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uint m_readio_blocks; /* min read size blocks */
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uint m_writeio_log; /* min write size log bytes */
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uint m_writeio_blocks; /* min write size blocks */
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struct log *m_log; /* log specific stuff */
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int m_logbufs; /* number of log buffers */
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int m_logbsize; /* size of each log buffer */
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uint m_rsumlevels; /* rt summary levels */
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uint m_rsumsize; /* size of rt summary, bytes */
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struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
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struct xfs_inode *m_rsumip; /* pointer to summary inode */
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struct xfs_inode *m_rootip; /* pointer to root directory */
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struct xfs_quotainfo *m_quotainfo; /* disk quota information */
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xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
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xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
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xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
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#define m_dev m_ddev_targp->pbr_dev
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__uint8_t m_dircook_elog; /* log d-cookie entry bits */
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__uint8_t m_blkbit_log; /* blocklog + NBBY */
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__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
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__uint8_t m_agno_log; /* log #ag's */
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__uint8_t m_agino_log; /* #bits for agino in inum */
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__uint8_t m_nreadaheads; /* #readahead buffers */
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__uint16_t m_inode_cluster_size;/* min inode buf size */
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uint m_blockmask; /* sb_blocksize-1 */
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uint m_blockwsize; /* sb_blocksize in words */
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uint m_blockwmask; /* blockwsize-1 */
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uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
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uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
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uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
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uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
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uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
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uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
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uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
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uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
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uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
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struct xfs_perag *m_perag; /* per-ag accounting info */
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struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
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sema_t m_growlock; /* growfs mutex */
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int m_fixedfsid[2]; /* unchanged for life of FS */
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uint m_dmevmask; /* DMI events for this FS */
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__uint64_t m_flags; /* global mount flags */
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uint m_attroffset; /* inode attribute offset */
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uint m_dir_node_ents; /* #entries in a dir danode */
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uint m_attr_node_ents; /* #entries in attr danode */
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int m_ialloc_inos; /* inodes in inode allocation */
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int m_ialloc_blks; /* blocks in inode allocation */
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int m_litino; /* size of inode union area */
|
|
int m_inoalign_mask;/* mask sb_inoalignmt if used */
|
|
uint m_qflags; /* quota status flags */
|
|
xfs_trans_reservations_t m_reservations;/* precomputed res values */
|
|
__uint64_t m_maxicount; /* maximum inode count */
|
|
__uint64_t m_maxioffset; /* maximum inode offset */
|
|
__uint64_t m_resblks; /* total reserved blocks */
|
|
__uint64_t m_resblks_avail;/* available reserved blocks */
|
|
#if XFS_BIG_INUMS
|
|
xfs_ino_t m_inoadd; /* add value for ino64_offset */
|
|
#endif
|
|
int m_dalign; /* stripe unit */
|
|
int m_swidth; /* stripe width */
|
|
int m_sinoalign; /* stripe unit inode alignmnt */
|
|
int m_attr_magicpct;/* 37% of the blocksize */
|
|
int m_dir_magicpct; /* 37% of the dir blocksize */
|
|
__uint8_t m_mk_sharedro; /* mark shared ro on unmount */
|
|
__uint8_t m_inode_quiesce;/* call quiesce on new inodes.
|
|
field governed by m_ilock */
|
|
__uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
|
|
__uint8_t m_dirversion; /* 1 or 2 */
|
|
xfs_dirops_t m_dirops; /* table of dir funcs */
|
|
int m_dirblksize; /* directory block sz--bytes */
|
|
int m_dirblkfsbs; /* directory block sz--fsbs */
|
|
xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
|
|
xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
|
|
xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
|
|
uint m_chsize; /* size of next field */
|
|
struct xfs_chash *m_chash; /* fs private inode per-cluster
|
|
* hash table */
|
|
struct xfs_dmops m_dm_ops; /* vector of DMI ops */
|
|
struct xfs_qmops m_qm_ops; /* vector of XQM ops */
|
|
struct xfs_ioops m_io_ops; /* vector of I/O ops */
|
|
atomic_t m_active_trans; /* number trans frozen */
|
|
} xfs_mount_t;
|
|
|
|
/*
|
|
* Flags for m_flags.
|
|
*/
|
|
#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
|
|
must be synchronous except
|
|
for space allocations */
|
|
#define XFS_MOUNT_INO64 (1ULL << 1)
|
|
/* (1ULL << 2) -- currently unused */
|
|
/* (1ULL << 3) -- currently unused */
|
|
#define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
|
|
operations, typically for
|
|
disk errors in metadata */
|
|
#define XFS_MOUNT_NOATIME (1ULL << 5) /* don't modify inode access
|
|
times on reads */
|
|
#define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to
|
|
user */
|
|
#define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
|
|
allocations */
|
|
#define XFS_MOUNT_COMPAT_ATTR (1ULL << 8) /* do not use attr2 format */
|
|
/* (1ULL << 9) -- currently unused */
|
|
#define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
|
|
#define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */
|
|
#define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
|
|
#define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */
|
|
/* osyncisdsync is now default*/
|
|
#define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above
|
|
* 32 bits in size */
|
|
/* (1ULL << 15) -- currently unused */
|
|
#define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
|
|
#define XFS_MOUNT_BARRIER (1ULL << 17)
|
|
#define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/
|
|
#define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
|
|
* allocation */
|
|
#define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */
|
|
#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
|
|
#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
|
|
* I/O size in stat() */
|
|
|
|
|
|
/*
|
|
* Default minimum read and write sizes.
|
|
*/
|
|
#define XFS_READIO_LOG_LARGE 16
|
|
#define XFS_WRITEIO_LOG_LARGE 16
|
|
|
|
/*
|
|
* Max and min values for mount-option defined I/O
|
|
* preallocation sizes.
|
|
*/
|
|
#define XFS_MAX_IO_LOG 30 /* 1G */
|
|
#define XFS_MIN_IO_LOG PAGE_SHIFT
|
|
|
|
/*
|
|
* Synchronous read and write sizes. This should be
|
|
* better for NFSv2 wsync filesystems.
|
|
*/
|
|
#define XFS_WSYNC_READIO_LOG 15 /* 32K */
|
|
#define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */
|
|
|
|
/*
|
|
* Allow large block sizes to be reported to userspace programs if the
|
|
* "largeio" mount option is used.
|
|
*
|
|
* If compatibility mode is specified, simply return the basic unit of caching
|
|
* so that we don't get inefficient read/modify/write I/O from user apps.
|
|
* Otherwise....
|
|
*
|
|
* If the underlying volume is a stripe, then return the stripe width in bytes
|
|
* as the recommended I/O size. It is not a stripe and we've set a default
|
|
* buffered I/O size, return that, otherwise return the compat default.
|
|
*/
|
|
static inline unsigned long
|
|
xfs_preferred_iosize(xfs_mount_t *mp)
|
|
{
|
|
if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
|
|
return PAGE_CACHE_SIZE;
|
|
return (mp->m_swidth ?
|
|
(mp->m_swidth << mp->m_sb.sb_blocklog) :
|
|
((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
|
|
(1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
|
|
PAGE_CACHE_SIZE));
|
|
}
|
|
|
|
#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
|
|
|
|
#define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
|
|
#define xfs_force_shutdown(m,f) \
|
|
VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__)
|
|
|
|
/*
|
|
* Flags sent to xfs_force_shutdown.
|
|
*/
|
|
#define XFS_METADATA_IO_ERROR 0x1
|
|
#define XFS_LOG_IO_ERROR 0x2
|
|
#define XFS_FORCE_UMOUNT 0x4
|
|
#define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */
|
|
#define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */
|
|
|
|
/*
|
|
* xflags for xfs_syncsub
|
|
*/
|
|
#define XFS_XSYNC_RELOC 0x01
|
|
|
|
/*
|
|
* Flags for xfs_mountfs
|
|
*/
|
|
#define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */
|
|
#define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */
|
|
#define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */
|
|
/* log recovery */
|
|
#define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */
|
|
|
|
/*
|
|
* Macros for getting from mount to vfs and back.
|
|
*/
|
|
#define XFS_MTOVFS(mp) xfs_mtovfs(mp)
|
|
static inline struct vfs *xfs_mtovfs(xfs_mount_t *mp)
|
|
{
|
|
return bhvtovfs(&mp->m_bhv);
|
|
}
|
|
|
|
#define XFS_BHVTOM(bdp) xfs_bhvtom(bdp)
|
|
static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp)
|
|
{
|
|
return (xfs_mount_t *)BHV_PDATA(bdp);
|
|
}
|
|
|
|
#define XFS_VFSTOM(vfs) xfs_vfstom(vfs)
|
|
static inline xfs_mount_t *xfs_vfstom(vfs_t *vfs)
|
|
{
|
|
return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops));
|
|
}
|
|
|
|
#define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d)
|
|
static inline xfs_agnumber_t
|
|
xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)
|
|
{
|
|
xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
|
|
do_div(ld, mp->m_sb.sb_agblocks);
|
|
return (xfs_agnumber_t) ld;
|
|
}
|
|
|
|
#define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d)
|
|
static inline xfs_agblock_t
|
|
xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
|
|
{
|
|
xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
|
|
return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
|
|
}
|
|
|
|
/*
|
|
* This structure is for use by the xfs_mod_incore_sb_batch() routine.
|
|
*/
|
|
typedef struct xfs_mod_sb {
|
|
xfs_sb_field_t msb_field; /* Field to modify, see below */
|
|
int msb_delta; /* Change to make to specified field */
|
|
} xfs_mod_sb_t;
|
|
|
|
#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock), PINOD)
|
|
#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
|
|
#define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock)
|
|
#define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s))
|
|
|
|
extern xfs_mount_t *xfs_mount_init(void);
|
|
extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
|
|
extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv);
|
|
extern int xfs_mountfs(struct vfs *, xfs_mount_t *mp, int);
|
|
extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
|
|
|
|
extern int xfs_unmountfs(xfs_mount_t *, struct cred *);
|
|
extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *);
|
|
extern int xfs_unmountfs_writesb(xfs_mount_t *);
|
|
extern int xfs_unmount_flush(xfs_mount_t *, int);
|
|
extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int);
|
|
extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
|
|
uint, int);
|
|
extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
|
|
extern int xfs_readsb(xfs_mount_t *mp);
|
|
extern void xfs_freesb(xfs_mount_t *);
|
|
extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
|
|
extern int xfs_syncsub(xfs_mount_t *, int, int, int *);
|
|
extern int xfs_sync_inodes(xfs_mount_t *, int, int, int *);
|
|
extern xfs_agnumber_t xfs_initialize_perag(struct vfs *, xfs_mount_t *,
|
|
xfs_agnumber_t);
|
|
extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
|
|
|
|
extern struct xfs_dmops xfs_dmcore_stub;
|
|
extern struct xfs_qmops xfs_qmcore_stub;
|
|
extern struct xfs_ioops xfs_iocore_xfs;
|
|
|
|
extern int xfs_init(void);
|
|
extern void xfs_cleanup(void);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __XFS_MOUNT_H__ */
|